EU VAT and IOSS, explained for ecommerce sellers

If you sell physical goods into the European Union, the tax paperwork is not an afterthought you can bolt on later: it decides whether your parcels clear customs cleanly or land your customers with surprise bills, and it is one of the first things to get right when you set up fulfilment in Europe. This is the part most first-time cross-border sellers underestimate, so it is worth understanding before you ship a single order.

What changed in 2021

Until July 2021, consignments worth under 22 euros entered the EU VAT-free. That exemption is gone. Every commercial parcel arriving in the EU now owes VAT, no matter how small, and the whole system was rebuilt around collecting it at the point of sale rather than at the border.

Two mechanisms came out of that reform. The One-Stop Shop (OSS) is for goods already inside the EU that you sell across borders, for example stock held in a German warehouse shipped to a customer in France. The Import One-Stop Shop (IOSS) is for goods shipped into the EU from outside it, in consignments valued at 150 euros or less. Most sellers based outside the EU, or drop-shipping from elsewhere, are dealing with IOSS.

What IOSS actually is

IOSS is a single VAT registration that lets you collect the destination country's VAT at checkout and remit it through one monthly return, instead of registering separately in every country you ship to. You charge the customer the correct local VAT rate when they pay, you put your IOSS number on the shipment, and customs waves the parcel through without charging the customer again on arrival.

The alternative, shipping without it, is what generates the horror stories. The parcel arrives, the carrier collects import VAT plus a handling fee from your customer at the door, and your customer, who thought they had already paid in full, opens a support ticket and asks for a refund. Do that at scale and your return rate quietly climbs for reasons that have nothing to do with your product.

The 150-euro line

IOSS only covers consignments up to 150 euros in intrinsic value: the goods themselves, excluding shipping and the VAT. Above that threshold, IOSS does not apply and the parcel goes through standard import procedures, with VAT and potentially customs duty collected at the border. If your average order value straddles that line, you will be running two flows at once, and your provider needs to handle both without you babysitting each shipment.

One common mistake: splitting a single order into two parcels to stay under 150 euros. Customs authorities treat that as one consignment, and getting caught doing it deliberately is worse than just paying the duty.

Who actually files it

This is the question that matters operationally, and the answer varies by provider. Three models exist, and they look identical in a sales deck:

• The provider registers for IOSS on your behalf, applies the number, and files the monthly return. You hand over the tax problem entirely.
• The provider applies your IOSS number to shipments but expects you to have registered and to file your own returns. The label handling is automated; the compliance is yours.
• The provider does neither and ships everything delivered-duty-unpaid, leaving collection to the carrier and the bill to your customer.

All three are legitimate. Only one of them is what you probably assumed you were buying. Confirm which one you are getting in writing, before you sign, because finding out during your first busy quarter is an expensive way to learn.

The practical checklist

Before you commit to a way of shipping into the EU, get clear answers to five things:

• Do you need IOSS at all, or is your stock already inside the EU (in which case OSS is your concern)?
• Who registers for the IOSS number, you or your provider?
• Who files the monthly return, and who is liable if it is late?
• How are orders over 150 euros handled, and is that flow automated?
• What happens to VAT on returns, since you are entitled to reclaim it but only if the paperwork supports it?

None of this is complicated once it is written down. It only becomes painful when it is discovered order by order in production. Decide the model deliberately, get it documented, and cross-border VAT becomes a monthly routine rather than a recurring emergency.